Reviewed By Jaime S (San Diego, CA) Reviewed for a 2000 Chevy Silverado —4/4/2017 2:47 PM
Product was as described after I took my truck to get them installed had no problems whatsoever passing emissions and engine code erase
Reviewed By Jeff T (Des Moines, IA) Reviewed for a 1999 Dodge Dakota —6/20/2017 3:20 AM
The 12579 is a large case single inlet, single outlet muffler. Internally the exhaust is split running the length of the case rejoining before exiting. The muffler has a nice quiet rumble at idle with no drone at speed. It has a nice performance sound when the throttle blades are opened wide. Install consists of headers, 2 1/4" to 3" Y-pipe, 3" through remainder.